HomeMy WebLinkAboutClearwater Construction Change Order 2 CP7-SE-2A-13-02 Primary Clarifier UpgradeCITY OF PASCO
PUBLIC WORKS DEPARTMENT
CONTRACT CHANGE ORDER NO. 2
Project No: CP7-SE-2A-13-02 project Title: Primary Clarifier Upgrade
Contractor: Clearwater Construction, 5711 W. Garden Springs Road, Spokane, WA 99224
Description of Change: Refer to Backup Sheet
Detail as Appropriate: Refer to Backup Sheet
Contract Bid Amount: $ 4,267,300.00
SALES TAX @ 8,6%: $ 366,987.80
Total: $ 4,634,287.80
PREVIOUS CHANGE ORDERS
CURRENT CHANGE ORDER
Subtotal $ 11,623.89
Subtotal $ 31,966.12
Sales tax @ 8.6% $ 1,016.85
Sales tax @ 8.6% $ 2,749.09
Total $ 12,840.74
Total $ 34,715.21
Total Change Orders To Date 5 47,555.95
New Contract Amount $ 4,681,843.75
IS CONTRACT TIME AFFECTED BY THIS CHANGE ORDER YES NO
Contract Time Prior to this Change Order ............................................. 285/335
Modification to Contract time by this Change Order ................................. 19
Revised Total Contract Time ......................................... ..--- ............ 304/354
It is mutually agreed by both parties that this Change Order fully describes the change(s) that is (are)
being made and that the compensation for this Change Order is full and complete and is the only
compensation due or owing for this Change Order. Further, it is mutually agreed that this document
will supplement the present Contract Documents and that the provisions of the previously executed
Contract Documents shall apply to this Change Order.
A E TO AND ACCEPTED:
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City of Pasco — Public Works Department
Change Order No. 2 Backup Sheet
Description of Need & Cost Evaluation
Prepared by: Don Tulloch, P.E. — Gray & Osborne, Inc.
Date: April 15, 2016
COP 002 — Primary Influent Pioin
Background Information: The Contract Documents required installation of cement mortar lined
and coated steel pipe for the 24 -inch primary influent piping. It was determined that ductile iron
piping could meet the same requirements at a lower cost.
Cost Evaluation: The original piping material quote was $63,065.71 and the revised quote for
the ductile iron pipe is $49,387.80. The savings of $13, 677.91 is split between the Contractor
and the City per the Value Engineering in the Contract Documents.
The final deductive price for this change item is ..................................................... ($6,838.96)
There is no change in contract time related to this item.
Page 1 of 7
City of Pasco — Public Works Department
Change Order No. 2 Backup Sheet
Description of Need & Cost Evaluation
Prepared by: Don Tulloch, P.E. — Gray & Osborne, Inc.
Date: April 15, 2016
COP 010 — Headworks Pilaster:
Background Information: Per the Contract Documents, the Contractor is to connect new walls
to the existing concrete walls at the headworks. It was determined that the existing walls are
out of plumb by about one to three inches, leaving two uneven notches at the connections
between the walls. It was determined that these two notches could be concealed by adding a
concrete pilaster at each location.
Cost Evaluation: The Contractor's cost to do this work is related to the forming, reinforcing, and
placing of concrete necessary to build the pilasters. The cost appears to be reasonable.
The final additive price is ............................
Increase contract time (calendar days) .......
Page 2 of 7
.................................. $3,048.35
.......................................2 days
City of Pasco — Public Works Department
Change Order No. 2 Backup Sheet
Description of Need & Cost Evaluation
Prepared by: Don Tulloch, P.E. — Gray & Osborne, Inc.
Date: April 15, 2016
COP 011— Davit Arm Mount:
Background Information: Labor and Industries requires that fall protection be included to
provide access whenever there is a drop of four feet or more. The City requested that a davit
arm mount be installed to provide access to the scum pump station, the valve vault, and the
clarifier vault hatch, for a total of three davit arm mounts.
Cost Evaluation: The majority of the cost of this change is for the davit arm mount material
which was selected by the City.
Thefinal additive price is..........................................................................................$5,574.64
There is no change in contract time related to this item.
Page 3 of 7
City of Pasco — Public Works Department
Change Order No. 2 Backup Sheet
Description of Need & Cost Evaluation
Prepared by: Don Tulloch, P.E. — Gray & Osborne, Inc.
Date: April 15, 2016
COP 012 — LCP 250/251 Modifications:
Background Information: The City has requested that the scum pump panel with the VFDs
(LCP-250) be moved inside the sludge pump room in lieu of being out by the wet well where it is
exposed to the elements and truck traffic. The remote panel (LCP-251) was requested to be
moved out by the wet well in lieu of in the sludge pump room. The work is described below:
• The intrinsically safe devices are being moved from LCP-250 to LCP-251 out by the wet
well to keep the intrinsically safe circuits as short as possible and to keep from adding
more conduits to keep the intrinsically safe circuits separated from all other circuits.
• Mount LCP-251 on a backboard to the handrail.
• Add a disconnect for each motor. Mount disconnect to backboard which is mounted to
handrail.
• Add 3 traffic rated junction boxes. An example box is attached to this e-mail.
• Add 3 explosion -proof junction boxes. The City has requested that the explosion -proof
junction boxes be sized large enough to coil enough extra conductor inside them such
that when uncoiled, the conductor is long enough to work on outside of the traffic rated
junction boxes (approximately 24" of coiled conductor).
• Provide cord grip bushings where each cord enters explosion -proof junction boxes.
Cost Evaluation: The original price proposed by the Contractor for this work was $13,379 for
the control panel manufacturer's changes, $34,048 for the electrical subcontractor's additional
work, and $3,709.25 for the prime contractor's overhead. Upon reviewing the change order
pricing, it was determined that there was duplication of work between the control panel
manufacturer and the electrical subcontractor. It also appeared that the electrical
subcontractor's hours and costs were high. After an extensive review and negotiation process,
the proposed prices are $2,713 for the control panel manufacturer, $21,502 for the electrical
subcontractor, and $1,482.05 for the prime contractor's overhead. Thus, the total price was
reduced from $51,136.25 to $25,697.05.
The final negotiated additive price is ....................
Increase contract time (calendar days) .................
Page 4 of 7
......$25,697.05
...........15 days
City of Pasco - Public Works Department
Change Order No. 2 Backup Sheet
Description of Need & Cost Evaluation
Prepared by: Don Tulloch, P.E. — Gray & Osborne, Inc.
Date: April 15, 2016
COP 015 — Delete Coatings at Scum Pump Station and Valve Vault
Background Information: In Change Order 1, the coatings for the project were deleted from the
Contract, except for the coatings in the scum pump station and the valve vault. In further
discussions about coatings, the City decided that it would like to remove these coatings as well
in order to reduce future maintenance of coating systems.
Cost Evaluation: The Contractor's deductive price to delete the coatings is $9,811. This is split
between the City and the Contractor per the Value Engineering in the Contract Documents.
The final negotiated deductive price is................................................................... $(4,905.50)
There is no change in contract time related to this item.
Page 5 of 7
City of Pasco — Public Works Department
Change Order No. 2 Backup Sheet
Description of Need & Cost Evaluation
Prepared by: Don Tulloch, P.E. — Gray & Osborne, Inc.
Date: April 15, 2016
COP 016 — Davit Mount for New Primary Clarifiers:
Background Information: Labor and Industries requires that fall protection be included to
provide access whenever there is a drop of four feet or more. The City requested that a davit
arm mount be installed to provide access to each new primary clarifier. Because of the clarifier
flight mechanism located along the walls of the clarifier, it is necessary to build a small concrete
deck over the effluent channels in each clarifier in order to install the davit mount.
Cost Evaluation: The majority of the cost of this change is for the davit arm mount material
which was selected by the City. The Contractor's cost to install the concrete decking appears
reasonable.
The final negotiated additive price is ...........
Increase contract time (calendar days) ........
Page 6 of 7
........$5,687.33
.............2 days
City of Pasco — Public Works Department
Change Order No. 2 Backup Sheet
Description of Need & Cost Evaluation
Prepared by: Don Tulloch, P.E. — Gray & Osborne, Inc.
Date: April 15, 2016
COP 018 — DV/DT Filters:
Background Information: This change is associated with the LCP 250/251 modifications in COP
012. Because of the extended length of cable to the VFD, it is required that DV/DT filters be
installed with the panel. This change was negotiated separately from COP 012 to reduce
delays in ordering control panels with a long lead time.
Cost Evaluation: The Contractor's pricing to purchase and install this equipment appears to be
reasonable.
The final negotiated additive price is........................................................................$3,703.21
There is no change in contract time related to this item.
Page 7 of 7